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this might be a stupid question, I don't know, but I'm working on a design for a wind-driven alternator, and while calculating the rms value of the output ac, which is maximum 18Hz AC, sinusoidal, it suddenly struck me that the rms value of a low-frequency wave must surely be much lower than a high-frequency one. That is, if rms is anything like an average? I know it's not an average, but still.....

I've looked at many sites, trying to find an equation that had a frequency or time component (and that I could understand; maths is not my strong point) but can't find anything. I'm hoping that someone here can help, or at least point me at something nearer.

All clarifications humbly and gratefully received

thanks,

ormusgold

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# RMS - is it frequency variant?

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